/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/Abilities/GameplayAbility.h
Sends a gameplay event, also creates a prediction window
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=Ability) virtual void SendGameplayEvent ( [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) EventTag, [FGameplayEventData](API\Plugins\GameplayAbilities\Abilities\FGameplayEventData) Payload )